Pipe-coupling.



No. 868,869. PATENTED OCT. 22. 1907.

W. W. KILPATRIGK.

PIPE GOUPLING.

APPLIOATION FILED JAN.3.1907.

SW1/vanto@ @IHM/nendo feo . of o111')lings where there are rubber and rneta'llie pipe NTA, GEORGIA, ASSIGNOR To or ATLANTA, GEORGIA, A e

ENT OFFICE.

AIR BRAKE AND STEAM ORPORATION OF GEORGIA.

PIPE-COU1 LING- Specification of Letters Patent.

. .Patentes opt. 22, 1907.

Applicaiinn filed January 3, 1907. Serial No. 350,670.

To all whom. it may concern:

lle it known that I, WA-ifrnn W. KILrATmcKya` citizen of the United States, residing at Atlanta, in the county of Fulton and Slate of Georgia, have invented certain new and useful Imprmfements in Pipe-Coup lingsl, of which the following is a specification.

In that class of hose couplings used in connecting the pipes of steam or air brakes between different cars, the coupling elements when connected between the cars, are subjected to extendedvibration, while under great internal pressure, willi the result that the couplings frequently become detached. When the coupling elements or heads become detached, the Weight of the hanging heads and the violent vibrations frequently result in causing the heads to become detached from the rubber connecting pipes. In other characters of couplings, such for instance'as l have devised, andwheh constitute the subject of my application for Letters Patent Serial No. 344903, the rubber pipes are dispensed with, being substituted by" metallic connee'tim1s,`but in such case the weight upon the coupling heads or elements is increased, with a somewhat increased tendency to cause their separation `under the conditions to which they aresubjeeted. f

lirorder to avoid these objections, both in the classes l connections, l provide the coupling heads or elements with locking means which may be shifted, alter the coupling heads are brought into their proper relative positions, for connection so as to hohl them Iixedly in their relation to each other and prevent any separationresulting from the vibrations to whitsh they aresubjected, as fully set forth hereinafter and as illustrated in the accompanying drawing, in which: Y

Figure l is a side view showing two couplingheads in connected relation and ope form of locking ydevice which may be employed; llig. 2 is an inverted plan viow'of Fig. 1l and Fig. 3 is a section on the line 3 3, Fig. 2,

The coupling heads A, A- are of any usual or suitable construction and each is provided with means for engaging the other, as a bracket a adapted to engage a bearing d on the opposite coupling head. As shown, the bracket a has a dove-tailed lip r: which engages the undercut or dove-tailed face of the bearing b, but I wish it to be understood that this mode of connection is simply one means ol securing the two coupling heads in their relative positions when connected, and that my invention is to be used in connection with any character of coupling means between the `heads in which it can be employed.

The locking device as shown'consists of a bolt parallel to the-axis of the head, and sliding in a support yserve to prevent the change in the relative positions of upon the head, as for instance in a longitudinallsocket 55 notches w to receive the handle f, which can be swung 6i) so as to enter either of the said notches to thereby hold the bolt in its forward er its retracted position. Each head is provided with a lateral. lug g having an opening or bearing T for receiving the end of tho bolt when it is thrust outward into locki drawing.

When the heads are brought into connected relation as shown, each holt is moved outward so as to lengage the opening or socket in the lug'g, and the two heads are thus locked together. y for connecting the heads to each other are the ordinary coupling or engaging devices, and that the strains tending to separate the heads come upon these engaging'devic'es, and that the locks or bolts above described simply the engaging devices when the heads are locked together, so as to maintain the strainupon these devices, while there is comparatively little strain upon the bolts themselves. For this reason there is no tendency of the bolts to be displaced by the strains upon the coupled 80 elements. Further it will loe seen that when the heads are locked together and thus held in axial alinement, thehandies f are vertical and tend therefore to retain, this position and to remain in the notches w, there being no tendency whatever resulting from the movements of the vcoupled heads to displace the handles from the notches, and consequently no danger of displacing the bolts longitudinally, even if any-of the movements of the head had this tendency, which they have not.

The longitudinal position of the bolts/has proved to be 9.0

a factor of importance inasmuch as there is no tendency to shear the bolts transversely as results when the bolts are arranged transversely, whenever there is a tendency' to separate the heads. It will be seen that any longitu dinal separation of the heads, 'such for instance as might 95 occur if thelugs b, b should break would have no tendency whatever to break the bolts e.

It will further be seen that the locking devices do not depend for their movement or retention in position upon the use of springs, which are always likely to become inoperative.

Without limiting myself to the precise construction and arrangement of parts illustrated in the drawing, I claim as my invention:

1. The combination in a heads, en'ch having a bracket with an undercut lip arranged to overlap the other head andan undercut shoulder ng position, as shown in the 65 It will be seen that the means 70 pipe coupling of two duplicate adapted to be engaged by the lip of the other bracket, a bolt sliding in each bracket parallel to the axis of the head, and a socket carried by each head adapted to receive I the bolt carried by the other bracket.

2. The combination in a pipe coupling, of two duplicate heads, means for interlockingr said heads against separation lengthwise, the said means including a bracket on each head extendingr beyond the pipe section, a lockinpr bolt in each bracket parallel to the axis of the head. and a lui.: upon each head provided with a socket to receive the end of the locking holt.

3. The combination in a pipe coupling, of two duplicate heads each having upon one side a bracket extending be yond the pipe section and upon the other side a bemin;Y shoulder, the bracket of each adapted to engage the bearing shoulder of the other and thereby lock the parts against endwise separation, a bolt mounted in each bracket parallel to the axis of the head, a lug upon each head be yond the bearing shoulder adjacent the end of th'c bracket carried by the other head and having a socket adapted to receive the end of said bolt.

4. The combination in a pipe coupling for the flexible pipes of railway trains, of two duplicate heads each having upon one side a bracket and upon the other side a bearing,l

section having upon one side a bracket shoulder, the bracket of each engaging the bearing shoulder of the other, a bolt mounted in each bracket parallel to thi,` axis ot' the head, a lug upon each head adjacent the bracket of the other when the parts are intel-locked, the said lng;l being provided with a socket for receiving the und of thc bolt whereby the parts are locked together.

5. A coup-ling head for pipes, comprising' a main hcad the main head section and provided with a locking shoulder` a locking bolt mounted in said bracket parallel to thc axis of the head and adapted to project beyond the ond thereof, a bearing shoulder on the opposih` side ol' the head. and a lug on said head on the sannl side as the beat` in;v shoulder and a distance from the end ot' thc head approximately equal to the distance that the l-rackct c,\-4 tends beyond the head. the said luaY beine' provided with a socket adapted to receive the end ot` a locking" holt.

In testimony whereof l aix my signature in presence ot' two witnesses.

JAMES E. Gans'r, W. W. Timer'.

extending' hcyond 

